4 125/336/58/ 1.7 Limitations This report has been prepared by GHD Limited for OceanaGold New Zealand Limited and may only be used and relied on by For OceanaGold New Zealand Limited for the purpose agreed between GHD and For OceanaGold New Zealand Limited as set out in Section 1.0 of this report. GHD otherwise disclaims responsibility to any person other than for OceanaGold New Zealand Limited arising in connection with this report. GHD also excludes implied warranties and conditions, to the extent legally permissible. The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the scope limitations set out in the report. The development the CSM has been based on interpretations and processing of the data provided to GHD by OGL, and supplementary data sourced directly by GHD (see section 1.3). A brief walkover of the Willows Farm site where the portal is located was made. No site specific field mapping or subsurface investigations have been conducted to support the development of the CSM, at this time. The interpretations in this report are based on assumptions made by GHD described in this report. GHD disclaims liability arising from any of the assumptions being incorrect. GHD has no responsibility or obligation to update this report to account for events or changes occurring subsequent to the date that the report was prepared. GHD has prepared this report on the basis of information provided by OceanaGold New Zealand Limited and others who provided information to GHD (including Government authorities), which GHD has not independently verified or checked beyond the agreed scope of work. GHD does not accept liability in connection with such unverified information, including errors and omissions in the report which were caused by errors or omissions in that information. An understanding of the geological site conditions depends on the integration of many pieces of information, some regional, some site specific, some structure specific and some experienced based. Hence this report should not be altered, amended, abbreviated, or issued in part in any way without prior written approval by GHD. GHD does not accept liability in connection with the issuing of an unapproved or modified version of this report. The interpretations made in this report and attached CSM are intended to support high level groundwater and surface water modelling. The level of technical detail shown is correspondingly low. As such, reliance of the CSM in its current form should not be relied on for tasks that extend beyond the above stated. Sincerely GHD Limited Nick Burke Nick Eldred Senior Engineering Geologist Principal Engineering Geologist Attachments: Geological Map Series Geological Long-Section (Tunnel)
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